The servo unscrewing device “multi“ (SAM) is our answer to the demands made on high performance injection molds with unscrewing function:
We realize these requirements through a variety of innovative solutions and through the basic use of servo-electric drives.
Threaded core, guide thread nut and cooling insert with sealing can be dismantled for inspection or maintenance on mounted mold from the parting line.
Servo unscrewing devices „Multi“ (SAM) be constructed, depending on the requirements, with one or two gearbox levels. The decision is based on the following parameters:
The system design is generally done by our project engineers, taking into account the technological possibilities and complying to the customer requirements.
In servo unscrewing devices with one gearbox level, several spur wheels are driven by a central pinion shaft RZW. For the
design of the system by our project engineers the following information (if available) is needed and applied:
A = Driving pinion shaft RZW - B = In-between pinion RTZ - C = Spur wheel STR
The circular arrangement allows to build very compact high cavity molds, even with only one gearbox level (8x, 16x). The gating is done via radial hot runner nozzles.
In servo unscrewing devices with two gearbox levels, several pinions in 2nd gear level are driven by a central pinion shaft RZW.
These are coupled with the pinion shafts of the first gearbox level which are driving several spur wheels.
For the interpretation of the system by our project engineers the information (if available) is needed and applied:
A = 1st gearbox level - A1 = driving pinion shaft RZW-1 - A2 = in-between pinion RTZ - A3 = spur wheel STR - B = 2nd gearbox level - B1 = main pinion shaft RZW-2 - B2 = pinion RTZ
The circular arrangement allows to build very compact, high cavity molds (32x, 64x, 96x, 128x). The gating is done by radial hot runner nozzles.
Servo unscrewing devices „multi“ (SAM) are available in many standard system sizes. The base forms a 4-fold arrangement of the spur wheels STR, which can be extended by multiple arrangement.
Custom sizes on request!
No. of teeth spur
No. of teeth pinion
Distance X in mm